管理员从请求中自动填充用户字段

Question

我已经制作了一个 django 管理表单来向模型添加一个新字段并更新一个通用模型，我的代码如下。它所有的工作都完美地接受了保存当前登录的用户。在 save() 方法中，我无法访问 request.user 来填充 created_by 字段。

class EventAdminForm(forms.ModelForm):
    tag_it   = forms.CharField(max_length=100)

    class Meta:
        model = Event

    # Step 2: Override the constructor to manually set the form's latitude and
    # longitude fields if a Location instance is passed into the form
    def __init__(self,  *args, **kwargs):
        super(EventAdminForm, self).__init__(*args, **kwargs)

        # Set the form fields based on the model object
        if kwargs.has_key('instance'):
            instance = kwargs['instance']
            self.initial['tag_it'] = ', '.join([i.slug for i in instance.tags.all()])



    def set_request(self, request):
        self.request = request
    # Step 3: Override the save method to manually set the model's latitude and
    # longitude properties based on what was submitted from the form
    def save(self, commit=True):
        model = super(EventAdminForm, self).save(commit=False)

        for i in self.cleaned_data['tag_it'].split(','):
            model.tags.create(slug=i, created_by=User.objects.get(username='mazban'))


        if commit:
            model.save()

        return model

class EventForm(admin.ModelAdmin):
    exclude = ('published_by', 'published_at', 'updated_at', 'updated_by', )
    form = EventAdminForm

Answer 1

从@brandon 的回复和您的评论中获取，您可以将它们混合使用：

# admin.py

# don't override EventAdminForm's save(). Instead implement it here:         

class EventAdmin(admin.ModelAdmin):
    exclude = ('published_by', 'published_at', 'updated_at', 'updated_by', )
    form = EventAdminForm

    def save_model(self, request, obj, form, change):
        obj.save()
        obj.tags.all().delete()
        for i in form.cleaned_data['tag_it'].split(','):
            obj.tags.create(slug=i, created_by=request.user)

Answer 2

要在 admin 中访问请求，您需要覆盖 ModelAdmin 的 save_model 方法：

例子：

def save_model(self, request, obj, form, change):
    if not change:
        obj.author = request.user
    obj.save()

有关更多信息，请查看文档：https://docs.djangoproject.com/en/1.3/ref/contrib/admin/#modeladmin-methods